Siemens SINAMICS S120 Function Manual page 276

Extended Functions
Function module "basic positioner"
Target position reached (r2684.10)
The status signal "target position reached" indicates that the drive has reached its
target position at the end of a traversing command. This signal is set as soon as
the actual drive position is within the positioning window p2544 and is reset, if it
leaves this window.
The status signal is not set, if
S Signal level 1 at binector input p2554 "signal traversing command active".
S Signal level 0 at binector input p2551 "signal setpoint static".
The status signal remains set, until
S Signal level 1 at binector input p2551 "signal setpoint static".
Reference point set (r2684.11)
The signal is set as soon as referencing has been successfully completed. It is
deleted as soon as no reference is there or at the start of the reference point
approach.
Acknowledgement, traversing block activated (r2684.12)
A positive edge is used to acknowledge that in the mode "traversing blocks" a new
traversing task or setpoint was transferred (the same signal level as binector input
p2631 activate traversing task). In the mode "direct setpoint input / MDI for setting-
up/positioning" a positive edge is used to acknowledge that a new traversing task
or setpoint was transferred (the same signal level as binector input p2650 "edge
setpoint transfer", if the transfer type was selected using a signal edge (binector
input p2649 "0" signal)).
Velocity limiting active (r2683.1)
If the actual setpoint velocity exceeds the maximum velocity p2571 – taking into
account the velocity override – it is limited and the control signal is set.
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SINAMICS S120 Function Manual, 03/2006 Edition